Auxiliary air valve



Get-16,1923. A, 1,471,255

P..FOWLER AUXILIARY AIR VALVE Filed March 2. 1921 Patented @ct. lb, 1923.

i rnns'ron rowLEa-or'eonnon, nEBaAsKAQ Amman famvfttvai "Application ne'dia h 2,1921. se'r iaind. 449,063.

Be it "known that I, PRESTON FoWLnR, a

citizen: of the' Un'ite'd States, residin at Gordon, in the' county of Sheridan and tate o'f'N'ebra'ska', have invented certain'new and useful Improvements in? Auxiliary Air Valves, of' whiclrthe following is a specification. a I v This invention relates toTtlie means for admitting fuel to internal combustion engines'and has" special reference to the engines of automobiles. The object of the invention is to provide a valve. between the carbureter and the intake manifold by the manipulation of which an additional sup ply of air may be admitted to the manifold and the consumption of fuel thereby reduced. Other objects .of the invention will appear in the course of the following de scription.

. The invention is illustrated in the accompanying drawings, in Which- Figure 1 is an elevation of the improved valve in position in the conduit leading from the carbureter to the intake manifold;

Fig. 2 is an enlarged vertical section through the valve Fig. 3 is a plan view of the valve, the valve proper being removed. In the drawings, the reference numeral 1 denotes the intake manifold of an automobile motor and'2 the carbureterkzooperating therewith. In carrying out my invention, I interpose in the pipe 3, leading from the carbureter to the manifold, a valve, casing 4 having a passage therethrough which communicates with and forms a continuation of the passage from the carbureter to the manifold. 'On its under side this valve casing 4: is provided with a cylindrical extension 5 and within the said cylindrical extension a hollow .cylindrical valve body '6 is slidably mounted. The lower end of the V bore of the cylindrical extension is closed by a plug 7 provided with notches 8 or otherwise constructed so that it maybe engaged by a suitable turning tool. Alined with the extension 5, on the upper side of the valve casing, is an annular flange or rib 9 constituting a valve seat, the upper edge of said rib or flange being beveled, as clearly shown in Fig. 3. The valve proper consists of a plate or disk 10 having its edge p by: working against the cool air.

suitably beveled to rest upon the beveled surfaces are preferably finished sofas" provide a groundfjoint." iThe disk or valve "platelO isica'rried-by a'stenrll wliich has 'its'lo'wer end'fthreaded intofa bossl2io'n the bottom of the cylindrical .valve 6 "and a"sp'ring- 13 is icoile'd aroundthe said stem f ibetween' the bottom "offlthe vvalve 6 "and o spaced abutments let whichextend acros's the; opening *defined'by'the inner walljof the r'ib 9,'-it3'being readily understoodfas show'uin F igI'Q, that the irib br valve "seat 9 defines an opening axially alined with the bore of the cylindrical extension 5 and com- I municating with the passage through the main valveocaslngf. To the upper end of the valve stem 11, I secure a link 15 which has its upper end pivoted to one arm of'an angle lever 16 fulcrumed upon the manifold 1 o'r-upon any other convenient support, the

arm of said lever remote from the link 15 extending upwardly, as shown clearly in.

Fig. 1. "The upwardly extending arm of the within the cylindrical extension 5 and the valve 10 is seated, the passage through. the

valve body 4 being uninterrupted so that fuel may flow freely from'the carbureter to the intake manifold. Should the vehicle strike a smooth level road while traveling at high speed,the chauffeur by manipulat ing the, pedal or other controlling inember 18 will turn the angle lever 16 about its fulcrum and thereby raise the valve stem 11 against the tension of'the spring 13 so that the valve 10 will be unseated and the valve 6 will be caused to project more or'less across the passage through the valvebody 4.

The flow offuel will thusvbe partly cut-off and an extra supply of fresh air will be o admitted into the valve casing 4: to room mingle with the fuelso that themixture will be thinned and an economy of fuel effected. If the valve body 6 be raised a considerable flow of fuel that practically no carburetted mixture will pass to the engine and it will If the. vehicle should be traveling down hill andextent, it will be possible to so reduce the receive a vast preponderance of cool airso that it will be cooled and partially braked acquire an undesirable velocity, the device may be manipulated so that the valve body I 6 will be raised entirely across'th'e passage through the body land the flow of fuel and air entirely cut-off whereupon the travel of the car will keep the englne turning over and working against a partial vacuum in each cylinder so that it will act as a vacuum brake. When the hold upon the controlling member 18 is released, the spring 13 at once expands and reseats the valve 10, the valve body G'being withdrawn from 'acrossthe passagethrough'the body 4 and serving-as a dash pot within the cylindrical extension 5 to prevent the seating of the valve 10 beingaccomplished in such a forcible manner as might tend to bend or otherwise damage the same.

The device is I obviously simple in construction and operation and it may be applied to any combustion engine without great expense and without requiringadisprising 'a valve casing having a passage therethrough and an inlet opening in one side, an extenslon on the opposite side of the valve casing, a hollow cylindrical valve slidably mounted in said extension, a valve adapted to close the inlet opening, an abutment extending across the inlet opening, a stem rigidly connecting the hollow cylindrical valve and the second-mentioned valve, means for manipulating said valve stem, and

anexpansion spring coiled around the valve stem between the abutment and the bottom of the hollow cylindrical valve.

, In testimony whereof I aflix my signa-' ture, I

' PRESTON FOWLER. [n s.] 

